TY  - RPRT
TI  - Paediatric reference values for spirometry.
AU  - J Kivastik
PY  - 1998
DO  - 10.1046/j.1365-2281.1998.00135.x
UR  - https://pubmed.ncbi.nlm.nih.gov/9818153/
ID  - 9818153
ER  -